X = int(input())

if X >= 400 and X < 600:
    print('8')
elif X >= 600 and X < 800:
    print('7')
elif X >= 800 and X < 1000:
    print('6')
elif X >= 1000 and X < 1200:
    print('5')
elif X >= 1200 and X < 1400:
    print('4')
elif X >= 1400 and X < 1600:
    print('3')
elif X >= 1600 and X < 1800:
    print('2')
elif X >= 1800 and X < 2000:
    print('1') X = int(input()) X int(input()) int input() input if X >= 400 and X < 600:
    print('8')
elif X >= 600 and X < 800:
    print('7')
elif X >= 800 and X < 1000:
    print('6')
elif X >= 1000 and X < 1200:
    print('5')
elif X >= 1200 and X < 1400:
    print('4')
elif X >= 1400 and X < 1600:
    print('3')
elif X >= 1600 and X < 1800:
    print('2')
elif X >= 1800 and X < 2000:
    print('1') X >= 400 and X < 600 X >= 400 X 400 X < 600 X 600 print('8') print '8' elif X >= 600 and X < 800:
    print('7') X >= 600 and X < 800 X >= 600 X 600 X < 800 X 800 print('7') print '7' elif X >= 800 and X < 1000:
    print('6') X >= 800 and X < 1000 X >= 800 X 800 X < 1000 X 1000 print('6') print '6' elif X >= 1000 and X < 1200:
    print('5') X >= 1000 and X < 1200 X >= 1000 X 1000 X < 1200 X 1200 print('5') print '5' elif X >= 1200 and X < 1400:
    print('4') X >= 1200 and X < 1400 X >= 1200 X 1200 X < 1400 X 1400 print('4') print '4' elif X >= 1400 and X < 1600:
    print('3') X >= 1400 and X < 1600 X >= 1400 X 1400 X < 1600 X 1600 print('3') print '3' elif X >= 1600 and X < 1800:
    print('2') X >= 1600 and X < 1800 X >= 1600 X 1600 X < 1800 X 1800 print('2') print '2' elif X >= 1800 and X < 2000:
    print('1') X >= 1800 and X < 2000 X >= 1800 X 1800 X < 2000 X 2000 print('1') print '1' X = int(input()) int(input()) X
X = int(input())

if X >= 400 and X < 600:
    print('8')
elif X >= 600 and X < 800:
    print('7')
elif X >= 800 and X < 1000:
    print('6')
elif X >= 1000 and X < 1200:
    print('5')
elif X >= 1200 and X < 1400:
    print('4')
elif X >= 1400 and X < 1600:
    print('3')
elif X >= 1600 and X < 1800:
    print('2')
elif X >= 1800 and X < 2000:
    print('1')